From patchwork Mon Oct 9 00:34:07 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Niedermayer X-Patchwork-Id: 5490 Delivered-To: ffmpegpatchwork@gmail.com Received: by 10.2.161.90 with SMTP id m26csp2089015jah; Sun, 8 Oct 2017 17:34:30 -0700 (PDT) X-Google-Smtp-Source: AOwi7QCazU2BnV1z2pRZnQ9zrh6E7kZJAxvGyn4W7rxWw2ka6qZBXOXH8aC0BFDRk8rgHB8fYot4 X-Received: by 10.28.0.66 with SMTP id 63mr6449535wma.7.1507509270396; Sun, 08 Oct 2017 17:34:30 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1507509270; cv=none; d=google.com; s=arc-20160816; b=pZYij+dj2w0JCW01AE+q7Ltwkax1fa/Cp5KEWiK7I/XqYZqdolMp33UJDYOiBEK1E/ ARzYTEqvkiu/8MS9wnfuXogeLwDHBoFnOgc9vYmazB5iS2aSC7i2sZ/Sk68X80YPU4tg Fnm3QlywJXzJip/OF8BOjcKLEBCzjD8bod/7HxyFYtWuUgrILZniOg1EfYt9YDGGQqpC LLHo5e/NbVfNU6Bm7hfcp2OytV6d705sFR5k14MAMj2zxUfu/N7gmkLstprIbb4XcXeG J5/Luff3scdrH/fTITHwvZy7yBqKx4YMsAUMOzGH9QE3lvF+raoH7PUBz2YQKNHIQmi7 qmRw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:content-transfer-encoding:mime-version:reply-to :list-subscribe:list-help:list-post:list-archive:list-unsubscribe :list-id:precedence:subject:references:in-reply-to:message-id:date :to:from:delivered-to:arc-authentication-results; bh=TaJg54CbF8ZsJDGtLJKWmoX1BqHwURhqJhecBo5xNvY=; b=AC3kExvdugmgVM6pPzdAvM06Lau/WvZWPnDI3Ae9A8LQq+D5l9amOftuB74IyHSq3q D2xkXHroQvEtwwe88nPaHJK1kbdUsRFG5weBQdaDHvq+CSo8i24oL3tNAjGTx2hN/D3n pp1FLkqxmfEFVTG6bfyJlUUCbqrnpLKJu+c4tUAl3t0KzzUZN626You6iHlceb6K+SvP 8dUr7CIuiqx626l1M4mdPtm4VQdFAN1doa4567/P20liwbhV5nT/pWZnEsmBI0BGDhjO E2FLeM4B15/1Q7B99sfZBt8I+bn8DAwmdNfx26RqNCoSrV2OqErbnKpb3jpCfC2rlUpp Cbvg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org. [79.124.17.100]) by mx.google.com with ESMTP id z191si5167343wmc.69.2017.10.08.17.34.30; Sun, 08 Oct 2017 17:34:30 -0700 (PDT) Received-SPF: pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) client-ip=79.124.17.100; Authentication-Results: mx.google.com; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id E0662681871; Mon, 9 Oct 2017 03:34:20 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from vie01a-dmta-pe03-2.mx.upcmail.net (vie01a-dmta-pe03-2.mx.upcmail.net [62.179.121.161]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 236CD680A93 for ; Mon, 9 Oct 2017 03:34:14 +0300 (EEST) Received: from [172.31.216.43] (helo=vie01a-pemc-psmtp-pe01) by vie01a-dmta-pe03.mx.upcmail.net with esmtp (Exim 4.88) (envelope-from ) id 1e1M1P-0000TF-OK for ffmpeg-devel@ffmpeg.org; Mon, 09 Oct 2017 02:34:15 +0200 Received: from localhost ([213.47.41.20]) by vie01a-pemc-psmtp-pe01 with SMTP @ mailcloud.upcmail.net id KCaA1w00f0S5wYM01CaBDL; Mon, 09 Oct 2017 02:34:11 +0200 X-SourceIP: 213.47.41.20 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Mon, 9 Oct 2017 02:34:07 +0200 Message-Id: <20171009003408.32057-2-michael@niedermayer.cc> X-Mailer: git-send-email 2.14.2 In-Reply-To: <20171009003408.32057-1-michael@niedermayer.cc> References: <20171009003408.32057-1-michael@niedermayer.cc> Subject: [FFmpeg-devel] [PATCH 2/3] avcodec/mpeg_er: Clear mcsel in mpeg_er_decode_mb() X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches MIME-Version: 1.0 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Fixes out of array read Should fix: 3516/clusterfuzz-testcase-minimized-4608518562775040 (not reprodoceable) Found-by: Insu Yun, Georgia Tech. Signed-off-by: Michael Niedermayer --- libavcodec/mpeg_er.c | 1 + 1 file changed, 1 insertion(+) diff --git a/libavcodec/mpeg_er.c b/libavcodec/mpeg_er.c index 5eca834072..ada1a1692f 100644 --- a/libavcodec/mpeg_er.c +++ b/libavcodec/mpeg_er.c @@ -71,6 +71,7 @@ static void mpeg_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type, s->mb_skipped = mb_skipped; s->mb_x = mb_x; s->mb_y = mb_y; + s->mcsel = 0; memcpy(s->mv, mv, sizeof(*mv)); ff_init_block_index(s);